External Angular Velocity Source (AB)

R2026b

Ideal source of mechanical energy that generates angular velocity proportional to the input signal

Since R2026a

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External Angular Velocity Source (AB) block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simscape / Foundation Library / Rotational / Sources

Description

The External Angular Velocity Source (AB) block represents an ideal external angular velocity source that maintains a specified angular velocity regardless of the load at the connected port.

Port R is an angle-based rotational conserving port. Specify the angular velocity at physical signal port S. A positive signal at port S applies a positive angular velocity on the network at port R.

The block logs the variable t, which represents the torque applied at port R to generate the specified velocity. A positive torque corresponds to acceleration in the positive direction. For more information, see Data Logging.

Examples

Interpreting Torque in the Angle-Based Rotational Domain

Describes how to interpret torques in a Simscape™ angle-based rotational network. It outlines the key concepts for understanding the signs of logged torques. It examines rotational spring systems driven by torque sources at different ends, as well as a rotational system of inertias, to illustrate the torque behavior.

• Open Live Script

Ports

Input

S — Control signal, rad/s

physical signal

Physical signal input port for the control signal that drives the source. A positive signal at this port applies a positive angular velocity on the network at port R.

Programmatic Use

Port: S

Conserving

R — Port that applies external angular velocity to network

angle-based rotational

Angle-based rotational conserving port that connects the block to the circuit and applies the external angular velocity to the physical network.

Programmatic Use

Port: R

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"fl_lib/Rotational/Sources/External Angular Velocity Source (AB)"

Example: add_block("fl_lib/Rotational/Sources/External Angular Velocity Source (AB)","myModel/myBlock",MakeNameUnique="on")

For information about programmatic access to individual block parameters, see the Programmatic Use section of parameter descriptions on this page.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2026a